* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #e0e0e0;
            background-color: #0f1419;
            background-image: linear-gradient(to bottom, #0f1419, #1a1f2e);
            padding: 0;
            margin: 0;
        }
        a {
            color: #00b4d8;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #90e0ef;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: #1a1f2e;
            border-bottom: 2px solid #00b4d8;
            padding: 15px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: bold;
            color: #ffd700;
            text-transform: uppercase;
            letter-spacing: 1px;
            text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
        }
        .my-logo a {
            color: inherit;
            text-decoration: none;
        }
        .my-logo a:hover {
            text-decoration: none;
            color: #ffed4e;
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        .nav-links a {
            color: #c0c0c0;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 4px;
        }
        .nav-links a:hover {
            background-color: #00b4d8;
            color: #fff;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            color: #ffd700;
            cursor: pointer;
            background: none;
            border: none;
        }
        #nav-toggle {
            display: none;
        }
        .breadcrumb {
            margin-top: 10px;
            font-size: 0.9rem;
            color: #a0a0a0;
            padding: 10px 0;
            border-bottom: 1px solid #2a2f3e;
        }
        .breadcrumb a {
            color: #00b4d8;
        }
        .breadcrumb a:hover {
            color: #90e0ef;
        }
        .breadcrumb span {
            color: #e0e0e0;
        }
        main {
            padding: 30px 0;
            background-color: #1a1f2e;
            border-radius: 10px;
            margin-top: 20px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
        }
        .article-header {
            text-align: center;
            margin-bottom: 40px;
            padding: 20px;
            background: linear-gradient(to right, #0f1419, #2a2f3e);
            border-radius: 10px;
        }
        h1 {
            font-size: 2.8rem;
            color: #ffd700;
            margin-bottom: 15px;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
        }
        .meta-info {
            font-size: 0.9rem;
            color: #a0a0a0;
            margin-top: 10px;
        }
        .meta-info i {
            margin-right: 5px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 30px;
        }
        .article-content {
            padding: 0 20px;
        }
        h2 {
            font-size: 2rem;
            color: #00b4d8;
            margin-top: 40px;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #2a2f3e;
        }
        h3 {
            font-size: 1.6rem;
            color: #90e0ef;
            margin-top: 30px;
            margin-bottom: 15px;
        }
        h4 {
            font-size: 1.3rem;
            color: #c0c0c0;
            margin-top: 25px;
            margin-bottom: 10px;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
            font-size: 1.1rem;
            line-height: 1.8;
            color: #d0d0d0;
        }
        .highlight {
            background-color: #2a2f3e;
            border-left: 4px solid #ffd700;
            padding: 20px;
            margin: 25px 0;
            border-radius: 5px;
        }
        .highlight p {
            margin-bottom: 0;
            font-weight: bold;
            color: #ffd700;
        }
        ul, ol {
            margin-bottom: 20px;
            padding-left: 30px;
        }
        li {
            margin-bottom: 10px;
            color: #d0d0d0;
        }
        .image-container {
            margin: 30px auto;
            text-align: center;
            max-width: 800px;
        }
        .image-container img {
            border-radius: 10px;
            border: 3px solid #00b4d8;
            box-shadow: 0 5px 15px rgba(0, 180, 216, 0.3);
        }
        .image-caption {
            font-style: italic;
            color: #a0a0a0;
            margin-top: 10px;
            font-size: 0.9rem;
        }
        .sidebar {
            padding: 20px;
            background-color: #2a2f3e;
            border-radius: 10px;
            margin-bottom: 30px;
        }
        .function-box {
            margin-bottom: 30px;
        }
        .function-box h3 {
            color: #ffd700;
            font-size: 1.4rem;
            margin-bottom: 15px;
        }
        .search-form, .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        input, textarea, select {
            padding: 12px;
            border: 1px solid #444;
            border-radius: 5px;
            background-color: #1a1f2e;
            color: #e0e0e0;
            font-size: 1rem;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #00b4d8;
            box-shadow: 0 0 5px rgba(0, 180, 216, 0.5);
        }
        button {
            padding: 12px 20px;
            background-color: #00b4d8;
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-weight: bold;
            transition: background-color 0.3s ease;
        }
        button:hover {
            background-color: #0093b3;
        }
        .stars {
            display: flex;
            gap: 10px;
            font-size: 1.5rem;
            color: #ffd700;
            cursor: pointer;
        }
        .stars span:hover {
            color: #ffed4e;
        }
        footer {
            background-color: #0f1419;
            padding: 40px 0 20px;
            margin-top: 50px;
            border-top: 2px solid #00b4d8;
        }
        .footer-container {
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        friend-link {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 20px;
            margin-bottom: 30px;
            padding: 20px;
            background-color: #1a1f2e;
            border-radius: 10px;
            width: 100%;
        }
        friend-link a {
            color: #00b4d8;
            padding: 8px 15px;
            border-radius: 5px;
            background-color: #2a2f3e;
            transition: all 0.3s ease;
        }
        friend-link a:hover {
            background-color: #00b4d8;
            color: #fff;
            text-decoration: none;
        }
        .copyright {
            text-align: center;
            color: #a0a0a0;
            font-size: 0.9rem;
            padding-top: 20px;
            border-top: 1px solid #2a2f3e;
            width: 100%;
        }
        @media (max-width: 768px) {
            .header-container {
                flex-direction: column;
                align-items: flex-start;
            }
            .my-logo {
                margin-bottom: 15px;
                font-size: 1.8rem;
            }
            .hamburger {
                display: block;
                position: absolute;
                top: 20px;
                right: 20px;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                background-color: #1a1f2e;
                padding: 20px;
                border-radius: 10px;
                margin-top: 15px;
            }
            #nav-toggle:checked ~ .nav-links {
                display: flex;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.4rem;
            }
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                margin-top: 30px;
            }
        }
        @media (min-width: 769px) {
            .content-grid {
                grid-template-columns: 3fr 1fr;
            }
        }
        .nav-links a, friend-link a, button {
            position: relative;
            overflow: hidden;
        }
        .nav-links a::after, friend-link a::after, button::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 5px;
            height: 5px;
            background: rgba(255, 255, 255, 0.5);
            opacity: 0;
            border-radius: 100%;
            transform: scale(1, 1) translate(-50%);
            transform-origin: 50% 50%;
        }
        .nav-links a:focus:not(:active)::after, friend-link a:focus:not(:active)::after, button:focus:not(:active)::after {
            animation: ripple 1s ease-out;
        }
        @keyframes ripple {
            0% {
                transform: scale(0, 0);
                opacity: 0.5;
            }
            100% {
                transform: scale(20, 20);
                opacity: 0;
            }
        }
        ::-webkit-scrollbar {
            width: 10px;
        }
        ::-webkit-scrollbar-track {
            background: #1a1f2e;
        }
        ::-webkit-scrollbar-thumb {
            background: #00b4d8;
            border-radius: 5px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #0093b3;
        }